<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <title></title>
    <style type="text/css">
        body, html{
            /*width: 100%;*/
            height: 100%;
            margin: 0 auto;
            padding: 0;
            border: 0;
            outline: none;
            vertical-align: baseline;
        }
        .header{
            width: 100%;
            height: 20px;
            background-color: #cf9;
            position: absolute;
            bottom:-99999px;
            visibility: hidden;
        }
        .box{
            width: 100%;
            height: 2000px;
            background-color: #9cf;
            display: block;
            position: static;
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="header"></div>

    </div>
</body>
</html>